Eucessia
Coquillett, 1886
Species Guides
1Eucessia is a of bee flies in the Bombyliidae, established by Coquillett in 1886. The genus contains at least one described , E. rubens. Eucessia belongs to the tribe Aphoebantini within the Anthracinae. Taxonomic relationships between Eucessia and related genera, particularly Aphoebantus and Epacmus, have been subject to revisionary discussion.
Pronunciation
How to pronounce Eucessia: //juːˈsɛsiə//
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Identification
Eucessia are small bee flies, likely measuring approximately 7–10 mm in length based on related . Diagnostic features distinguishing Eucessia from closely related genera such as Aphoebantus and Epacmus require examination of thoracic and abdominal , wing venation patterns, and genitalic structures. The genus is characterized by features described in Melander's 1950 revision of Aphoebantus and its relatives.
Similar Taxa
- AphoebantusMay include Eucessia as a subset according to at least one authority; the two share close morphological affinities and were treated together in Melander's 1950 revision.
- EpacmusClosely related in the same tribe Aphoebantini; historically grouped with Eucessia in taxonomic treatments and shares similar body plan and size range.
More Details
Taxonomic Uncertainty
The taxonomic validity of Eucessia has been questioned. At least one world authority on Bombyliidae has suggested that Eucessia may represent a subset of Aphoebantus rather than a distinct .